142684340 has 24 divisors (see below), whose sum is σ = 303744840. Its totient is φ = 56291328.

The previous prime is 142684327. The next prime is 142684343. The reversal of 142684340 is 43486241.

It can be written as a sum of positive squares in 4 ways, for example, as 1882384 + 140801956 = 1372^2 + 11866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 142684297 and 142684306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142684343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47405 + ... + 50324.

It is an arithmetic number, because the mean of its divisors is an integer number (12656035).

Almost surely, 2^142684340 is an apocalyptic number.

142684340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142684340 is an abundant number, since it is smaller than the sum of its proper divisors (161060500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142684340 is a wasteful number, since it uses less digits than its factorization.

142684340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97811 (or 97809 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 142684340 is about 11945.0550438246. The cubic root of 142684340 is about 522.5470940359.

The spelling of 142684340 in words is "one hundred forty-two million, six hundred eighty-four thousand, three hundred forty".